The script in the makefile is getting too complex, make it a Python script

appbundledeps.py

@@ -0,0 +1,105 @@
+#!/usr/bin/env python3
+
+import re
+import os
+import sys
+import subprocess
+
+# EXEs to scan for dependencies
+exepaths = [ ]
+deps = { }
+
+# look for argv
+sit = iter(sys.argv)
+next(sit) # toss argv[0]
+
+class DepInfo:
+    modpath = None
+    exepath = None
+    loaderpath = None # @loader_path
+    dependencies = None
+    def __init__(self,modpath=None,exepath=None):
+        self.modpath = str(modpath)
+        self.loaderpath = None
+        self.exepath = exepath;
+        if not modpath == None:
+            self.loaderpath = os.path.basename(modpath)
+        self.dependencies = [ ]
+    def __str__(self):
+        return "[modpath="+str(self.modpath)+",loaderpath="+str(self.loaderpath)+",exepath="+str(self.exepath)+"]"
+
+def help():
+    print("appbundledeps.py --exe <exe>")
+
+def GetDepList(exe,modpath=None,exepath=None):
+    rl = [ ]
+    p = subprocess.Popen(["otool","-L",exe],stdout=subprocess.PIPE,encoding="utf8")
+    for lin in p.stdout:
+        if lin == None or lin == "":
+            continue
+        # we're looking for anything where the first char is tab
+        if not lin[0] == '\t':
+            continue
+        #
+        lin = lin.strip().split(' ')
+        if len(lin) == 0:
+            continue
+        deppath = lin[0].split('/')
+        #
+        if deppath[0] == "@loader_path":
+            deppath[0] = os.path.dirname(modpath)
+        # NTS: Realpath is needed because Brew uses symlinks and .. rel path resolution will fail trying to access /opt/opt/...
+        deppath = os.path.realpath('/'.join(deppath))
+        if deppath == None:
+            raise Exception("Unable to resolve")
+        #
+        rl.append(DepInfo(modpath=deppath,exepath=exepath))
+    #
+    p.terminate()
+    return rl
+
+while True:
+    try:
+        n = next(sit)
+        if n == '--exe':
+            exepaths.append(os.path.realpath(next(sit)))
+        elif n == '-h' or n == '--help':
+            help()
+            sys.exit(1)
+        else:
+            print("Unknown switch "+n)
+            sys.exit(1)
+    except StopIteration:
+        break
+
+if len(exepaths) == 0:
+    print("Must specify EXE")
+    sys.exit(1)
+
+for exe in exepaths:
+    dl = GetDepList(exe,modpath=exe,exepath=exe)
+    for dep in dl:
+        if not dep.modpath in deps:
+            dep.dependencies = GetDepList(dep.modpath,modpath=dep.modpath,exepath=exe)
+            deps[dep.modpath] = dep
+
+while True:
+    newdeps = 0
+    tdeps = deps.copy()
+    for deppath in tdeps:
+        depobj = deps[deppath]
+        for dep in depobj.dependencies:
+            if not dep.modpath in deps:
+                newdeps += 1
+                dep.dependencies = GetDepList(dep.modpath,modpath=dep.modpath,exepath=exe)
+                deps[dep.modpath] = dep
+    #
+    if newdeps == 0:
+        break
+
+for deppath in deps:
+    # do not list /usr/lib or /System libraries, only /opt (Brew) dependencies
+    # TODO: Make an option to list them if wanted
+    if re.match(r"^/opt/",deppath):
+        print(deppath)
+